血液中血红蛋白氧含量占血红蛋白氧容量的百分比叫血红蛋白氧饱和度。也就是常说的血氧饱和度，血液中以其他方式存在（如溶解）的氧气含量很少，可以忽略不计。
结论汽车废气是使外勤警碳氧血红蛋白饱和度增高的主要因素，已对交通警察产生一定的健康影响。
Conclusion The automobile exhaust was a main factor resulting in higher levels of saturation of carboxyhemoglobin in exposure group and had a certain impact on traffic policemen's health.
根据血红蛋白和含氧血红蛋白的光谱特性，提出了一种监测动脉血氧饱和度的新系统。
According to the spectroscopic characteristics of haemoglobin and oxyhaemoglobin, this paper present a new system for monitoring the arterial oxygen saturation.
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